<PAGE>   1
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q


[X]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES 
         EXCHANGE ACT OF 1934
         FOR THE QUARTERLY PERIOD ENDED DECEMBER 31, 1998

[ ]      TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE       
         SECURITIES EXCHANGE ACT OF 1934
         FOR THE TRANSITION PERIOD FROM __________ TO __________

                         COMMISSION FILE NO. 000-29226

                       VALLEY NATIONAL GASES INCORPORATED
             (Exact name of registrant as specified in its charter)


         PENNSYLVANIA                                   23-2888240
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
incorporation or organization)

                                 67 43RD STREET
                          WHEELING, WEST VIRGINIA 26003
                    (Address of principal executive offices)

                                 (304) 232-1541
              (Registrant's telephone number, including area code)

Indicate by checkmark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

      Yes ___x____                      No _______ 

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

             Class                               Outstanding at February 11,1999
             -----                               -------------------------------

   Common stock, $0.001 par value                            9,570,084


================================================================================

<PAGE>   2



                       VALLEY NATIONAL GASES INCORPORATED


                                TABLE OF CONTENTS



<TABLE>
<CAPTION>
                                                                                    Page
                                                                                    ----

<S>                                                                                 <C>
PART I            FINANCIAL INFORMATION

     ITEM 1       Condensed Consolidated Balance Sheets as of June 30, 1998
                  And December 31, 1998                                               3

                  Condensed Consolidated Statements of Operations for the
                  Three Months Ended December 31, 1997 and 1998                       5

                  Condensed Consolidated Statements of Operations for the
                  Six Months Ended December 31, 1997 and 1998                         6

                  Condensed Consolidated Statements of Cash Flows for the
                  Six Months Ended December 31, 1997 and 1998                         7

                  Notes to Condensed Consolidated Financial Statements                8

     ITEM 2       Management's Discussion and Analysis of Financial
                  Condition and Results of Operations                                12


PART II           OTHER INFORMATION

     ITEM 6       Exhibits and Reports on Form 8-K                                   18

     SIGNATURES                                                                      19

     EXHIBIT INDEX                                                                   20
</TABLE>




                                     - 2 -
<PAGE>   3



                          PART I. FINANCIAL INFORMATION

ITEM I.  FINANCIAL STATEMENTS

                       VALLEY NATIONAL GASES INCORPORATED

                      CONDENSED CONSOLIDATED BALANCE SHEETS


<TABLE>
<CAPTION>
                              A S S E T S
                                                                             June 30,           December 31,
                                                                               1998                 1998
                                                                        -------------------  -----------------
                                                                                                (Unaudited)
<S>                                                                       <C>                  <C>         
CURRENT ASSETS:
    Cash and cash equivalents                                             $    589,170         $    110,272
    Accounts receivable, net of allowance for doubtful accounts of
       $345,000 and $354,239, respectively
                                                                            11,657,659           10,557,683
    Inventory                                                                8,731,834            9,414,192
    Prepaids and other                                                       1,242,799            1,458,447
                                                                          ------------         ------------

                  Total current assets                                      22,221,462           21,540,594
                                                                          ------------         ------------

PROPERTY, PLANT AND EQUIPMENT:
    Land                                                                        49,786               49,786
    Buildings and improvements                                               3,957,774            4,098,825
    Equipment                                                               49,212,815           51,930,360
    Transportation equipment                                                 8,520,471            9,198,814
    Furniture and fixtures                                                   3,341,977            3,619,982
                                                                          ------------         ------------

                  Total property, plant and equipment                       65,082,823           68,897,767

    Accumulated depreciation                                               (26,580,317)         (28,476,478)
                                                                          ------------         ------------

                  Net property, plant and equipment                         38,502,506           40,421,289
                                                                          ------------         ------------

OTHER ASSETS:
    Intangibles, net of amortization of $6,888,902 and $8,082,836,
       respectively                                                         34,706,927           33,832,198
    Deposits and other assets                                                1,628,161            1,664,451
                                                                          ------------         ------------

                  Total other assets                                        36,335,088           35,496,649
                                                                          ------------         ------------

TOTAL ASSETS                                                              $ 97,059,056         $ 97,458,532
                                                                          ============         ============
</TABLE>






   The accompanying notes are an integral part of these financial statements.




                                     - 3 -
<PAGE>   4



                       VALLEY NATIONAL GASES INCORPORATED

                      CONDENSED CONSOLIDATED BALANCE SHEETS


<TABLE>
<CAPTION>
                  LIABILITIES AND STOCKHOLDERS' EQUITY                June 30,           December 31, 
                                                                       1998                  1998     
                                                                  ---------------      ---------------
                                                                                         (Unaudited)  
<S>                                                                <C>                  <C>           
CURRENT LIABILITIES:                                                                                  
    Current maturities of long-term debt                           $  5,611,714         $  5,768,750  
    Bank overdraft                                                      393,530            1,111,677  
    Accounts payable, trade                                           4,584,388            2,341,728  
    Accrued compensation and employee benefits                        3,177,180            1,996,561  
    Other current liabilities                                         1,271,817            1,953,583  
                                                                   ------------         ------------  
                                                                                                      
                  Total current liabilities                          15,038,629           13,172,299  
                                                                                                      
LONG-TERM DEBT, less current maturities                              48,655,869           49,487,876  
DEFERRED TAX LIABILITY                                                5,933,192            5,933,192  
OTHER LONG-TERM LIABILITIES                                           1,368,766            1,389,699  
                                                                   ------------         ------------  
                                                                                                      
                  Total liabilities                                  70,996,456           69,983,066  
                                                                   ------------         ------------  
                                                                                                      
REDEEMABLE COMMON STOCK, par value, $.001                                                             
per share, issued 235,000 shares                                      1,880,000            1,975,825  
                                                                                                      
STOCKHOLDERS' EQUITY:                                                                                 
    Common stock, par value, $.001 per share-                                                         
    Authorized, 30,000,000 shares                                                                     
    Issued, 9,385,084 shares                                              9,385                9,385  
    Paid-in-capital                                                  17,162,396           17,162,396  
    Retained earnings                                                 7,010,819            8,584,110  
    Treasury stock at cost, 0 and 50,000 shares,                                                      
      respectively                                                           --             (256,250)                      
                                                                   ------------         ------------  
                                                                                                      
                  Total stockholders' equity                         24,182,600           25,499,641  
                                                                   ------------         ------------  
                                                                                                      
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                         $ 97,059,056         $ 97,458,532  
                                                                   ============         ============  
</TABLE>
                                                                 









   The accompanying notes are an integral part of these financial statements.




                                     - 4 -
<PAGE>   5




                       VALLEY NATIONAL GASES INCORPORATED

                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                                         Three Months Ended
                                                                            December 31,
                                                              -----------------------------------
                                                                    1997               1998
                                                              ----------------     --------------

<S>                                                              <C>                <C>           
NET SALES                                                        $23,890,001        $24,616,796   
COST OF PRODUCTS SOLD, excluding depreciation                                                     
     and amortization                                             10,988,568         11,203,721   
                                                                 -----------        -----------   
                  Gross profit                                    12,901,433         13,413,075   
                                                                 -----------        -----------   
                                                                                                  
EXPENSES:                                                                                         
    Operating and administrative                                   8,381,385          9,085,593   
    Depreciation and amortization                                  2,145,691          2,005,169   
                                                                 -----------        -----------   
                  Total expenses                                  10,527,076         11,090,762   
                                                                 -----------        -----------   
                  Income from operations                           2,374,357          2,322,313   
                                                                                                  
Interest expense                                                     684,045            969,142   
OTHER INCOME (EXPENSE) NET                                            59,342             50,676   
                                                                 -----------        -----------   
EARNINGS BEFORE INCOME TAXES                                       1,749,654          1,403,847   
                                                                                                  
PROVISION FOR INCOME TAXES                                           731,098            575,577   
NET EARNINGS                                                     $ 1,018,556        $   828,270   
                                                                 ===========        ===========   
                                                                                                  
ACCRETION OF REDEEMABLE COMMON STOCK                                      --             95,825   
                                                                 ===========        ===========   
NET EARNINGS AVAILABLE FOR COMMON STOCK                          $ 1,018,556        $   732,445   
                                                                 ===========        ===========   
                                                                                                  
BASIC EARNINGS PER SHARE                                         $      0.11        $      0.08   
DILUTED EARNINGS PER SHARE                                              0.11               0.08   
WEIGHTED AVERAGE SHARES                                            9,620,084          9,618,985   
DILUTED AVERAGE SHARES                                             9,666,349          9,618,985   
</TABLE>








   The accompanying notes are an integral part of these financial statements.





                                     - 5 -
<PAGE>   6




                       VALLEY NATIONAL GASES INCORPORATED

                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                                     Six Months Ended
                                                                       December 31,
                                                          ----------------------------------
                                                                1997               1998
                                                          ----------------    --------------

<S>                                                          <C>                <C>           
NET SALES                                                    $44,511,152        $47,825,713   
COST OF PRODUCTS SOLD, excluding depreciation                                                 
     and amortization                                         20,463,037         21,473,769   
                                                             -----------        -----------   
                  Gross profit                                24,048,115         26,351,944   
                                                             -----------        -----------   
                                                                                              
EXPENSES:                                                                                     
    Operating and administrative                              15,745,455         17,738,088   
    Depreciation and amortization                              4,044,592          3,977,831   
                                                             -----------        -----------   
                  Total expenses                              19,790,047         21,715,919   
                                                             -----------        -----------   
                  Income from operations                       4,258,068          4,636,025   
                                                                                              
Interest expense                                               1,255,212          1,938,030   
OTHER INCOME (EXPENSE) NET                                       120,716            131,016   
                                                             -----------        -----------   
EARNINGS BEFORE INCOME TAXES                                   3,123,572          2,829,011   
                                                                                              
PROVISION FOR INCOME TAXES                                     1,280,665          1,159,895   
                                                             -----------        -----------   
                                                                                              
NET EARNINGS                                                 $ 1,842,907          1,669,116   
                                                             ===========        ===========   
                                                                                              
ACCRETION OF REDEEMABLE COMMON STOCK                                  --             95,825   
                                                             ===========        ===========   
NET EARNINGS AVAILABLE FOR COMMON STOCK                      $ 1,842,907        $ 1,573,291   
                                                             ===========        ===========   
                                                                                              
BASIC EARNINGS PER SHARE                                     $      0.19        $      0.16   
DILUTED EARNINGS PER SHARE                                          0.19               0.16   
WEIGHTED AVERAGE SHARES                                        9,620,084          9,619,535   
DILUTED AVERAGE SHARES                                         9,664,341          9,619,535   
</TABLE>






   The accompanying notes are an integral part of these financial statements.




                                     - 6 -
<PAGE>   7





                       VALLEY NATIONAL GASES INCORPORATED

                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)


<TABLE>
<CAPTION>
                                                                      Six Months Ended
                                                                        December 31,
                                                            --------------------------------------
                                                                   1997                 1998
                                                            ----------------      ----------------

<S>                                                            <C>                  <C>         
NET CASH PROVIDED BY OPERATING ACTIVITIES                      $  5,314,163         $  3,887,010
                                                               ------------         ------------

CASH FLOWS FROM INVESTING ACTIVITIES:
    Proceeds from disposal of assets                                395,884                    0
    Purchases of property and equipment                          (2,714,678)          (3,092,055)
    Business acquisitions, net of cash acquired                 (22,038,500)          (1,806,626)
                                                               ------------         ------------

                  Net cash used by investing activities
                                                                (24,357,294)          (4,898,681)

CASH FLOWS FROM FINANCING ACTIVITIES:
    Proceeds from borrowings                                     21,516,037            7,863,901
    Principal payments on loans                                  (3,430,754)          (7,074,878)
    Purchase of treasury shares                                           0             (256,250)
                                                               ------------         ------------
                      Net cash (used) provided by
                         Financing activities                    18,085,283              532,773
                                                               ------------         ------------

NET CHANGE IN CASH AND CASH EQUIVALENTS                            (957,848)            (478,898)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD                    1,551,949              589,170
                                                               ------------         ------------

CASH AND CASH EQUIVALENTS, END OF PERIOD                       $    594,101         $    110,272
                                                               ============         ============

SUPPLEMENTAL CASH FLOW INFORMATION:
    CASH payments for interest                                 $  1,371,350         $  1,241,550
                                                               ============         ============
    Cash payments for income taxes                             $    470,000         $    968,084
                                                               ============         ============
</TABLE>











   The accompanying notes are an integral part of these financial statements.




                                     - 7 -
<PAGE>   8




                       Valley National Gases Incorporated


              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


1. BASIS OF PRESENTATION:

   The financial statements of Valley National Gases Incorporated (the Company)
presented herein are unaudited. Certain information and footnote disclosures
normally prepared in accordance with generally accepted accounting principles
have been either condensed or omitted pursuant to the rules and regulations of
the Securities and Exchange Commission. Although the Company believes that all
adjustments, consisting of only normal recurring adjustments, necessary for a
fair presentation have been made, interim periods are not necessarily indicative
of the financial results of operations for a full year. As such, these financial
statements should be read in conjunction with the financial statements and notes
thereto included or incorporated by reference in the Company's audited financial
statements for the period ending June 30, 1998.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

INVENTORY

   Inventory is carried at the lower of cost or market using the first-in,
first-out (FIFO) method.

The components of inventory are as follows:

<TABLE>
<CAPTION>
                    June 30, 1998       December 31, 1998
                  ----------------    ----------------------
                                           (Unaudited)

<S>                  <C>                  <C>       
Hardgoods            $7,651,443            $8,391,194
Gases                 1,080,391             1,022,998
                     ----------            ----------

                     $8,731,834            $9,414,192
                     ==========            ==========
</TABLE>


PLANT AND EQUIPMENT

   Plant and equipment are stated at cost. Depreciation is provided on the
straight-line basis over the estimated useful lives of the related assets.

   Effective July 1, 1998, the Company changed its estimate of the useful lives
of its cylinders and tanks from 12 to 30 years. This change was made to better
reflect the estimated periods during which these assets will remain in service.
The change had the effect of reducing depreciation expense in the six months
ended December 31, 1998 by approximately $1.1 million and increasing net
earnings by $0.7 million or $.07 per share.

   The Company changed the estimated useful life of cylinders as a result of
thorough studies and analyses. The studies considered technological advances in
cylinders, empirical data obtained from cylinder manufacturers and other
industry experts and experience gained from the Company's maintenance of a
cylinder population of approximately 375,000 cylinders. 



                                     - 8 -
<PAGE>   9

3. ACQUISITIONS:

   The Company acquires businesses engaged in the distribution of industrial,
medical and specialty gases and related welding supplies and accessories.
Acquisitions have been recorded using the purchase method of accounting and,
accordingly, results of their operations have been included in the Company's
financial statements since the effective dates of the respective acquisitions.

   During the six months ended December 31, 1998, the Company purchased two
businesses. The largest of these acquisitions and the effective date was Altoona
Welding Supply Company, Inc. (September 1998).

   In connection with these acquisitions, the total purchase price, fair value
of assets acquired, cash paid and liabilities assumed were as follows:

<TABLE>
<CAPTION>
                                                          Six Months Ended
                                                         December 31, 1998
                                                        ---------------------
                                                            (Unaudited)

<S>                                                          <C>       
Cash paid                                                    $1,198,901
Notes payable and capital leases assumed
                                                                700,000
Other liabilities assumed and acquisition costs
                                                                203,997
                                                             ----------

Total purchase price allocated to assets acquired
                                                             $2,102,898
                                                             ==========
</TABLE>





                                     - 9 -
<PAGE>   10


4. LONG-TERM DEBT:

   Long-term debt consists of the following:

<TABLE>
<CAPTION>
                                                                                          June 30, 1998          December 31, 1998
                                                                                         ---------------         -----------------
                                                                                                                     (Unaudited)
<S>                                                                                        <C>                      <C>       
Revolving note, interest at LIBOR plus 1.625% payable monthly through January
    2001. Secured by the assets of the Company                                             $ 26,831,036             $ 30,294,937
Termnote, interest at LIBOR plus 1.625% payable monthly through October 2003 
    Secured by the assets of the Company                                                     13,431,245               12,152,075
Notepayable, interest at 6.6% payable annually through October 2003. Secured by
    certain assets of the Company                                                             4,098,447                3,415,372
Individuals and corporations, mortgages and notes, interest at 3.7% to 10.00%,
    payable at various dates through 2010                                                    10,087,261                9,562,812
                                                                                           ------------             ------------

                                                                                             54,447,989               55,425,196
                  Original issue discount                                                      (180,406)                (168,570)
                  Current maturities                                                         (5,611,714)              (5,768,750)
                                                                                           ------------             ------------

Total long-term debt                                                                       $ 48,655,869             $ 49,487,876
                                                                                           ============             ============
</TABLE>


Prime rate was 7.75% and LIBOR was 5.32% at December 31, 1998.

    On February 5, 1998 the Company entered into an amended and restated credit
facility with Bank One, as agent. The new credit facility increased the maximum
revolving note borrowings to $75.3 million, including a letter of credit
sublimit of $25.0 million, and refinanced the term note at the existing balance
of $14.7 million. The new scheduled maturity date of the term note is October 4,
2003. The new scheduled maturity date of the revolving note is January 16, 2001.
The Company pays a fee for the unused portion of the revolving loan. The
revolving loan is used primarily to fund acquisitions. The Company is not
required to make principal payments on outstanding balances of the revolving
loan as long as certain covenants are satisfied. Interest is charged on both the
term loan and the revolving loan at either the lender's prime rate or various
LIBOR rates, at the Company's discretion, plus an applicable spread. The
weighted average interest rate for substantially all of the borrowings under the
credit facility was 7.1% as of December 31, 1998. As of December 31, 1998,
availability under the revolving loan was approximately $37.7 million, with
outstanding borrowings of approximately $30.2 million and outstanding letters of
credit of approximately $7.4 million. The credit facility is secured by all of
the Company's assets.

    The loan agreement for the credit facility contains various financial
covenants applicable to the Company, including covenants requiring minimum fixed
charge coverage, maximum funded debt to EBITDA, and minimum net worth. The
Company is in compliance with these covenants and believes that it will continue
to be in compliance through at least the next twelve months.




                                     - 10 -
<PAGE>   11



5.  EARNINGS PER SHARE

   Basic earnings per share were computed based on the weighted average number
of common shares issued and outstanding during the relevant periods. Diluted
earnings per common share were computed based on the weighted average number of
common shares issued and outstanding plus additional shares assumed to be
outstanding to reflect the dilutive effect of common stock equivalents using the
treasury stock method.

<TABLE>
<CAPTION>
                                                                Three Months Ended                    Six Months Ended
                                                                   December 31,                          December 31,
                                                        -----------------------------------    -------------------------------
                                                               1997              1998              1997              1998
                                                        -----------------   ---------------    -------------     -------------

<S>                                                         <C>               <C>               <C>               <C>       
Net earnings available for common stock                     $1,018,556        $  732,445        $1,842,907        $1,573,291
                                                            ==========        ==========        ==========        ==========

Basic earnings per common share:

Weighted average common shares                               9,620,084         9,618,985         9,620,084         9,619,535
                                                            ==========        ==========        ==========        ==========
Basic earnings per common share                             $     0.11        $     0.08        $     0.19        $     0.16
                                                            ==========        ==========        ==========        ==========

Diluted earnings per common share:

Weighted average common shares                               9,620,084         9,618,985         9,620,084         9,619,535

Shares issuable from assumed conversion of common
stock equivalents                                               46,265                --            44,347                --
                                                            ----------        ----------        ----------        ----------

Weighted average common and common equivalent shares         9,666,349         9,618,985         9,664,431         9,619,535     
                                                            ==========        ==========        ==========        ==========

Diluted earnings per common share                           $     0.11        $     0.08        $     0.19        $     0.16
                                                            ==========        ==========        ==========        ==========
</TABLE>



6.  SUBSEQUENT EVENTS:

   On January 4, 1999 the Company acquired the assets of Keen Welding Supplies,
Inc., a welding supply distributor having approximately $2 million in annualized
sales. On January 14, 1999 the Company acquired Dlouhy Welding Supply, Inc., a
welding supply distributor having approximately $4 million in annualized sales.
Both transactions were financed through the Company's credit facility and notes
with the sellers.

7. NEW ACCOUNTING PRONOUNCEMENT:

   Effective July 1, 1998, the Company adopted Statement of Financial Accounting
Standards No. 130, "Reporting Comprehensive Income," ("SFAS No. 130"), which
establishes standards for the reporting and display of comprehensive income in
financial statements. Comprehensive income is defined as the change in equity
during a period from transactions and other events and circumstances from
nonowner sources. SFAS No. 130 had no impact on the Company's financial
statements, as no items of other comprehensive income were recorded in the
accompanying interim financial statements.



                                     - 11 -
<PAGE>   12

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
         FINANCIAL CONDITION AND RESULTS OF OPERATIONS

   The following discussion should be read in conjunction with, and is qualified
in its entirety by, the Financial Statements and the Notes thereto.


OVERVIEW

   The Company is a leading packager and distributor of industrial, medical and
specialty gases, welding equipment and supplies, and propane in ten states in
the mid-Atlantic and midwestern regions of the United States. The Company's net
sales have grown, primarily as a result of acquisitions, at a compound annual
rate of approximately 17% per year since the Company started business in 1958,
increasing from $190,000 in that year to $98.3 million for the last twelve
months. In fiscal 1998, gases accounted for approximately 40% of net sales,
welding equipment and supplies accounted for approximately 47% of net sales, and
cylinder and tank rental accounted for approximately 13% of net sales.

   The Company believes it has been successful in executing its strategy of
growth through acquisitions, having completed 38 acquisitions since 1990. Some
acquisitions have had, and the Company expects some future acquisitions may
have, a dilutive effect upon the Company's income from operations and net income
before tax for a short period following consummation. This temporary dilution
occurs because some of the benefits of acquisitions, such as leveraging of
operating and administrative expenses, improved product gross margins and real
sales growth, occur over a period ranging from two to eight quarters, depending
upon the complexity of integrating each acquisition into the Company's existing
operations. The consideration for most acquisitions includes a combination of a
cash payment at closing, seller financing and payments under covenants not to
compete and consulting agreements. In most cases, operating cash flow of an
acquired business is positive in a relatively short period of time. For many
acquisitions, the Company believes that projections of future cash flows justify
payment of amounts in excess of the book or market value of the assets acquired,
resulting in goodwill being recorded.

   The Company's results are subject to moderate seasonality, primarily due to
fluctuations in the demand for propane, which is highest during winter months
falling in the Company's second and third fiscal quarters. Seasonality of total
sales has increased as propane sales as a percentage of total sales have
increased.

   Operating and administrative expenses are comprised primarily of salaries,
benefits, transportation equipment operating costs, facility lease expenses and
general office expenses. These expenses are generally fixed on a quarter-
to-quarter basis. The Company believes that changes in these expenses as a
percentage of sales should be evaluated over the long term rather than on a
quarter-to-quarter basis due to the seasonality of sales mentioned above and the
generally fixed nature of these expenses.

   Historically, the Company's gross profit margins as a percentage of sales
have been higher on the sale of gases than on the sale of welding equipment and
supplies ("hard goods"). As a result of recent acquisitions of some distributors
with a higher proportion of hard goods to gas sales, the Company's average gross
profit as a percentage of sales has decreased in comparison to prior years.
Future acquisitions may affect this pattern depending upon the product mix of
the acquired businesses.

   Until April 10, 1997, the Company was treated as an S Corporation for federal
and state income tax purposes. As a result, the Company was not subject to
federal and 



                                     - 12 -
<PAGE>   13

state income taxes. The Company terminated its S Corporation election in
connection with its initial public offering of stock and become a C Corporation.
As a result of termination of the S Corporation election, the Company recognized
$3.9 million of deferred income taxes in the fourth quarter of fiscal year 1997.

RESULTS OF OPERATIONS

Comparison of Three Months Ended December 31, 1998 and 1997

   Net sales increased 3.0%, or $0.7 million, to $24.6 million from $23.9
million for the three months ended December 31, 1998 and 1997, respectively.
Acquisitions made during the preceding twelve months contributed $2.6 million of
the increase in net sales, while same store sales declined $1.9 million. Same
store sales decreased 7.7% versus the same quarter last year reflecting reduced
propane sales as a result of warm weather conditions, reduced sales to steel
related businesses, reflecting reduced capacity utilization in the steel
industry as a result of the high level of imports and reduced sales at its
branches in Southwest Ohio impacted by the actions of former employees who, in
the Company's opinion, acted in violation of covenants not to compete. Gases and
cylinder revenue represented 57.0% of net sales for the three months ended
December 31, 1998, with hard goods representing 43.0%. In comparison, net sales
for the three months ended December 31, 1997 reflected gases and cylinder
revenue as 54.6% and hard goods as 45.4%. This change in sales mix reflects the
effect of acquisitions made during the preceding twelve months and the before
mentioned factors that affected same store sales.

   Gross profit, which excludes depreciation and amortization, increased 4.0%,
or $.5 million, to $13.4 million from $12.9 million for the three months ended
December 31, 1998 and 1997, respectively. Acquisitions made during the
preceding twelve months contributed $1.2 million of the increase in gross
profit, while the base business decreased $0.7 million, reflecting the decline
in same store sales. Gross profit as a percentage of net sales was 54.5% for the
three months ended December 31, 1998, compared to 54.0% for the three months
ended December 31, 1997. This change reflected an increase in the proportion of
gas and cylinder rent sales, which have a higher gross profit margin as a
percentage of net sales than hardgoods.

   Operating and administrative expenses increased 8.4%, or $0.7 million, to
$9.1 million from $8.4 million for the three months ended December 31, 1998 and
1997, respectively. Of this increase, $0.7 million was related to acquired
businesses while base business remained the same. Operating and administrative
expenses as a percentage of sales was 36.9% for the three months ended December
31, 1998, as compared to 35.1% for the same quarter in 1997, reflecting the
addition of operating expenses related to acquired businesses as a percentage of
sales offset by the effect of the decline in the same store sales.

   Depreciation and amortization expense decreased $0.1 million for the three
months ended December 31, 1998 compared to the same period in 1997, reflecting
the increase from acquisitions made during the last twelve months offset by the
impact of the company's change in its estimate of useful lives related to
cylinders and tanks from twelve to thirty years.

   Interest expense increased $0.3 million for the quarter, reflecting the
financing of acquisitions made during the last twelve months, partially reduced
by lower interest rates.

   Net earnings decreased 18.7% to $0.8 million for the three months ended
December 31, 1998 compared to $1.0 million for the prior year quarter.




                                     - 13 -
<PAGE>   14

Comparison of Six Months Ended December 31, 1998 and 1997

   Net sales increased 7.4%, or $3.3 million, to $47.8 million from $44.5
million for the six months ended December 31, 1998 and 1997, respectively.
Acquisitions made during the preceding twelve months contributed $6.5 million of
the increase in net sales, while same store sales declined $3.2 million. Same
store sales decreased 7.0% versus the same period last year reflecting reduced
propane sales as a result of warm weather conditions, reduced sales to steel
related businesses, reflecting reduced capacity utilization in the steel
industry as a result of the high level of imports and reduced sales at its
branches in Southwest Ohio impacted by the actions of former employees who, in
the Company's opinion acted in violation of covenants not to compete. Gases and
cylinder revenue represented 55.6% of net sales for the six months ended
December 31, 1998, with hard goods representing 44.4%. In comparison, net sales
for the six months ended December 31, 1997 reflected gases and cylinder revenue
as 53.7% and hard goods as 46.3%. This change in sales mix reflects the effect
of acquisitions made during the preceding twelve months and the before mentioned
factors that affected same store sales.

   Gross profit, which excludes depreciation and amortization, increased 9.6%,
or $2.3 million, to $26.3 million from $24.0 million for the six months ended
December 31, 1998 and 1997, respectively. Acquisitions made during the
preceding twelve months contributed $3.0 million of the increase in gross
profit, while the gross profit in the base business decreased $0.7 million.
Gross profit as a percentage of net sales was 55.1% for the six months ended
December 31, 1998, compared to 54.0% for the six months ended December 31, 1997.
This change reflected an increase in the proportion of gas and cylinder rent
sales, which have a higher gross profit margin as a percentage of net sales than
hardgoods.

   Operating and administrative expenses increased 12.7%, or $1.9 million, to
$17.7 million from $15.8 million for the six months ended December 31, 1998 and
1997, respectively. Of this increase, $1.8 million was related to acquired
businesses and the remaining $0.1 million reflected increases on a same store
basis. Operating and administrative expenses as a percentage of sales was 37.1%
for the six months ended December 31, 1998, as compared to 35.4% for the same
period in 1997, reflecting the addition of operating expenses related to
acquired businesses as a percentage of sales offset by the effect of the decline
in the same store sales.

   Depreciation and amortization expense decreased $0.1 million for the six
months ended December 31, 1998 compared to the same period in 1997, reflecting
the increase from acquisitions made during the last twelve months offset by the
impact of the company's change in its estimate of useful lives related to
cylinders and tanks from twelve to thirty years.

   Interest expense increased $0.7 million for the six months, reflecting the
financing of acquisitions made during the last twelve months, partially reduced
by lower interest rates.

   Net earnings decreased 9.4% to $1.7 million for the six months ended December
31, 1998 compared to $1.8 million for the same period last year.

YEAR 2000 COMPLIANCE

   The Company's work on the Year 2000 ("Y2K") computer compliance issue began
in 1996. The Company's Y2K compliance program consists of five parts: inventory,
assessment, renovation, testing and implementation. The Company has conducted an
inventory and assessment of remediation required for business-critical
information 




                                     - 14 -
<PAGE>   15

technology applications. Project plans have been created, and progress is being
monitored on an ongoing basis. The Company's goal is to have its
business-critical information technology applications Y2K compliant by March 31,
1999. The Company is also in the process of completing Company-wide inventory,
assessment and remediation project plans for business-critical personal
computers and software, user applications and embedded-chip systems. The
Company's goal is to have these business-critical components Y2K compliant by
June 30, 1999.

   The Company is investigating the Y2K compliance status of its vendors,
suppliers and affiliates via the Company's own internal vendor compliance
effort. The Company will carry out this task through a Company-wide effort to
address internal issues, and jointly with industry trade groups, to address
issues related to third parties which are common to the industry.

   The Company estimates that expenses incurred and expenses still to be
incurred for programming, internal staff costs and other expenses related to its
Y2K efforts will be less than $100,000.

   While the Company believes it is taking all appropriate steps to achieve Y2K
compliance, its Y2K issues and any potential future business interruptions,
costs, damages or losses related thereto, are dependent, to a significant
degree, upon the Y2K compliance of third parties, both domestic and
international, such as government agencies, customers, vendors and suppliers.
The Y2K problem is pervasive and complex, as virtually every computer operation
will be affected in some way. Consequently, no assurance can be given that Y2K
compliance can be achieved without significant additional costs. The products
sold by the Company can be purchased through multiple vendors. Given these
multiple sources of supply, along with the Company`s inventory, the Company
believes that disruptions in supply caused by Y2K problems would not have a
significant impact on its results of operations.

LIQUIDITY AND CAPITAL RESOURCES

   Historically, the Company has financed its operations, capital expenditures
and debt service with funds provided from operating activities. Acquisitions
have been financed by a combination of seller financing, bank borrowings and
funds generated from operations.

   At December 31, 1998, the Company had working capital of approximately $8.4
million. Funds provided by operations for the six months ended December 31, 1998
were approximately $3.9 million. Funds used for investing activities were
approximately $4.9 million for the six months ended December 31, 1998,
consisting primarily of capital spending and financing for acquisitions. Sources
of funds from financing activities for the six months ended December 31, 1998
were approximately $0.5 million from net borrowings. The Company's cash balance
decreased $0.5 million during the six months to $0.1 million.

   On February 5, 1998 the Company entered into an amended and restated credit
facility with Bank One, as agent. The new credit facility increased the maximum
revolving note borrowings to $75.3 million, including a letter of credit
sublimit of $25.0 million, and refinanced the term note at the existing balance
of $14.7 million. The new scheduled maturity date of the term note is October 4,
2003. The new scheduled maturity date of the revolving note is January 16, 2001.
The Company pays a fee for the unused portion of the revolving loan. The
revolving loan is used primarily to fund acquisitions. The Company is not
required to make principal payments on outstanding balances of the revolving
loan as long as certain covenants are satisfied. Interest is charged on both the
term loan and the revolving loan at either the lender's prime rate or various
LIBOR rates, at the Company's discretion, 



                                     - 15 -
<PAGE>   16

plus an applicable spread. The weighted average interest rate for substantially
all of the borrowings under the credit facility was 7.1% as of December 31,
1998. As of December 31, 1998, availability under the revolving loan was
approximately $37.7 million, with outstanding borrowings of approximately $30.2
million and outstanding letters of credit of approximately $7.4 million. The
credit facility is secured by all of the Company's assets.

    The loan agreement for the credit facility contains various financial
covenants applicable to the Company, including covenants requiring minimum fixed
charge coverage, maximum funded debt to EBITDA, and minimum net worth. The
Company is in compliance with these covenants and believes that it will continue
to be in compliance through at least the next twelve months.

    The Company is obligated under various promissory notes related to the
financing of acquisitions that have various rates of interest, ranging from 3.7%
to 10.0% per annum, and maturities through 2010. The outstanding balance of
these notes as of December 31, 1998 was $13.0 million. Some of these notes are
secured by assets related to the applicable acquisition, some are unsecured, and
some are backed by bank letters of credit issued under the Company's credit
facility.

   On December 23, 1997, the Company entered into two interest rate swap
agreements with Bank One to reduce the impact of changes in interest rates. The
first agreement was for a period of seven years, cancelable by the bank at the
end of five years, whereby the Company agreed to pay the bank a fixed rate of
5.90% per annum on the notional principal amount of $5.0 million and the bank
agreed to pay the Company the one month LIBOR rate on the same notional amount.
The second agreement was for a period of five years, cancelable by the bank at
the end of three years, whereby the Company agreed to pay the bank a fixed rate
of 5.80% per annum on the notional principal amount of $5.0 million and the bank
agreed to pay the Company the one month LIBOR rate on the same notional amount.
On January 15, 1998, the Company entered into two interest rate swap agreements
with Bank One to reduce the impact of changes in interest rates. The first
agreement was for a period of seven years, cancelable by the bank at the end of
five years, whereby, the Company agreed to pay the bank a fixed rate of 5.43%
per annum on the notional principal amount of $10.0 million and the bank agreed
to pay the Company the one month LIBOR rate on the same notional amount. The
second agreement was for a period of five years, cancelable by the bank at the
end of three years, whereby, the Company agreed to pay the bank a fixed rate of
5.29% per annum on the notional principal amount of $10.0 million and the bank
agreed to pay the Company the one month LIBOR rate on the same notional amount.
On August 28, 1998, the Company entered into an interest rate swap agreement
with Bank One to reduce the impact of changes in interest rates. This agreement
was for a period of five years, cancelable by the bank at the end of three
years, whereby, the Company agreed to pay the bank a fixed rate of 5.40% per
annum on the notional principal amount of $5.0 million and the bank agreed to
pay the Company the one month LIBOR rate on the same notional amount. The
Company is exposed to credit loss in the event of nonperformance by the bank.
However, the Company does not anticipate nonperformance by the bank.

    The Company has entered into a put/call option agreement with an independent
distributor for the purchase of its business. This option becomes exercisable
beginning in the year 2002 and ending in the year 2008. The Company believes
that it will have adequate capital resources available to fund this acquisition
at such time that the option is exercised.




                                     - 16 -
<PAGE>   17

INTEREST RATE SENSITIVITY

   There was no significant change to the composition of the Company's fixed and
variable rate long term debt during the quarter ended December 31, 1998. During
the quarter, the Company increased its fixed to variable interest rate swaps, as
mentioned above, to a total notional principal amount of $35 million. As of
December 31, 1998 the Company's average pay rate for these swaps was 5.51%
compared to its average receive rate of 5.32%.

FLUCTUATIONS IN QUARTERLY RESULTS

   The Company generally has experienced higher sales activity during its second
and third quarters as a result of seasonal sales of propane, with corresponding
lower sales for the first and fourth quarters. As a result, income from
operations and net income typically are higher for the second and third quarters
than for the first and fourth quarters of the fiscal year.

INFLATION

   The impact of inflation on the Company's operating results has been moderate
in recent years, reflecting generally low rates of inflation in the economy and
the Company's historical ability to pass purchase price increases to its
customers in the form of sales price increases. While inflation has not had, and
the Company does not expect that it will have, a material impact upon operating
results, there is no assurance that the Company's business will not be affected
by inflation in the future.

SUBSEQUENT EVENTS

   On January 4, 1999 the Company acquired the assets of Keen Welding Supplies,
Inc., a welding supply distributor having approximately $2 million in annualized
sales. On January 14, 1999 the Company acquired Dlouhy Welding Supply, Inc., a
welding supply distributor having approximately $4 million in annualized sales.
Both transactions were financed through the Company's credit facility and notes
with the sellers.


RECENT ACCOUNTING PRONOUNCEMENTS

   In June 1997, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 131, "Disclosures about Segments of an Enterprise and Related Information,"
which establishes standards for the way that public business enterprises report
financial and descriptive information about their reportable operating segments.
As required by SFAS No. 131, the Company will adopt the new statement in the
fiscal year ended June 30, 1999 and apply it to interim financial statements in
subsequent fiscal years.

   In February 1998, the FASB issued SFAS No. 132, "Employers' Disclosures about
Pensions and other Postretirement Benefits," which standardizes disclosures for
pensions and other postretirement benefits to the extent practicable, which
requires additional information on changes in the benefit obligations and fair
values of plan assets that will facilitate financial analysis and eliminate
other disclosures no longer useful as prescribed in previous standards. The
Company does not have any pension or other postretirement benefit plans impacted
by SFAS No. 132.

   In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities," which establishes accounting and reporting
standards for derivative instruments and requires that an entity recognize all
derivatives as either assets or liabilities and measure those instruments at
fair value. As 



                                     - 17 -
<PAGE>   18

required by SFAS No. 133, the Company expects to adopt the new statement in the
first quarter of Fiscal 2000. The effect of this statement on the Company's
financial statements has not been determined.


                           PART II. OTHER INFORMATION


ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

        (a)       Exhibits:

                  See the Exhibit Index on page 20.

        (b)       Reports on Form 8-K:

                  No reports on Form 8-K were made during the quarter.





                                     - 18 -
<PAGE>   19



                                   SIGNATURES



   Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                             VALLEY NATIONAL GASES INCORPORATED



February 12, 1999                            /s/ Robert D. Scherich        
                                             ------------------------------
                                             Robert D. Scherich
                                             Chief Financial Officer




                                     - 19 -
<PAGE>   20





                                  EXHIBIT INDEX


<TABLE>
<CAPTION>
Exhibit Number   Description
--------------   -------------------------------------------------------------

<S>              <C>                 
3.1              Articles of Amendment of the Company, incorporated by reference
                 to Exhibit 3.1 to the Company's Registration Statement on Form 
                 S-1 under the Securities Act of 1933, as amended, (File No. 
                 333-19973)

3.2              Bylaws of the Company, incorporated by reference to
                 Exhibit 3.2 to the Company's Registration Statement on
                 Form S-1 under the Securities Act of 1933, as amended,
                 (File No. 333-19973)


27.1             Financial Data Schedule (provided for the information of the 
                 U.S. Securities and Exchange Commission only)
</TABLE>





                                     - 20 -